was plotting to blow up the new york city headquarters of the federal reserve. a big and obvious symbol of this nation's financial system. our justice correspondent, pete williams, has been working on this story from our d.c. news room. he is with us tonight with details, good evening. >> reporter: brian, the fbi says this plot was the idea of a 21-year-old college student from bangladesh. he was arrested after riding in a van that he thought carried a powerful bomb that agents say they assumed was one that would kill women and children. his target, the new york offices say, was a bank building, he was arrested later in federal court charged with attempting to try to set off the powerful bomb. he was identified as quazi nafis, and came to the country on a student visa, but intended to carry out a terror attack. by july, he was trying to recruit people, meeting one man several times in new york central park, but that man turned out to be an fbi informant. and from that moment on, quazi nafis was under surveillance. he wanted to target the new york stock exchange,